Stadium: Center Round: 1
| Challenger Monterrey | 2020/03/03 23:20 | Jason Jung v Collin Altamirano | 7-6,6-7,7-6 |
| Challenger Monterrey | 2020/03/02 18:40 | Oscar Jose Gutierrez v Collin Altamirano | 3-6,4-6 |
| Challenger Calgary | 2020/02/26 20:40 | Collin Altamirano v Arthur Rinderknech | 6-3,3-6,3-6 |
| Challenger Calgary | 2020/02/24 17:40 | Collin Altamirano v Fabrizio Ornago | 6-3,7-6 |
| Challenger Morelos | 2020/02/17 18:05 | Collin Altamirano v Matias Franco Descotte | 3-6,5-7 |
| Challenger Cleveland | 2020/02/10 23:00 | Ryan Harrison v Collin Altamirano | 6-4,7-6 |
| Challenger Newport Beach | 2020/01/27 21:35 | Collin Altamirano v Thai-Son Kwiatkowski | 1-6,3-6 |
| ITF M25 Rancho Santa Fe | 2020/01/17 18:45 | Collin Altamirano v Geoffrey Blancaneaux | 0-6,7-6,5-7 |
| US Pro Tennis Series West Coast | 2020/06/06 17:40 | Nick Chappell v Joshua Ortlip | 6-4,4-6,6-10 |
| US Pro Tennis Series West Coast | 2020/06/05 21:45 | Nick Chappell v Felix Corwin | 6-2,3-6,7-10 |
| US Pro Tennis Series West Coast | 2020/06/04 18:50 | Nick Chappell v Gage Brymer | 4-6,6-4,11-9 |
| US Pro Tennis Series West Coast | 2020/06/03 19:15 | Raymond Sarmiento v Nick Chappell | 3-6,6-1,10-3 |
| US Pro Tennis Series West Coast | 2020/06/02 16:00 | Martin Redlicki v Nick Chappell | 6-7,3-6 |
| US Pro Tennis Series West Coast | 2020/06/01 21:35 | Joshua Ortlip v Nick Chappell | 6-2,6-1 |
| ITF M25 Las Vegas | 2020/03/07 19:00 | Justin Butsch v Nick Chappell | 7-6,6-7,7-6 |
| ITF M25 Las Vegas | 2020/03/06 21:00 | Nick Chappell v Alexander Sarkissian | 3-6,6-3,7-5 |